//
// EventHandlerCoda.cs
//
// Author:
//   Chris Howie <cdhowie@gmail.com>
//
// Copyright (c) 2010 Chris Howie
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System;

namespace zielonka.co.uk.framework.math_ {

	public static class EventHandlerCoda {

		public static void Raise (this EventHandler self, object sender, EventArgs e)
		{
			if (self != null)
				self (sender, e);
		}

		public static void Raise (this EventHandler self, object sender)
		{
			Raise (self, sender, EventArgs.Empty);
		}

		public static void Raise (this EventHandler self, object sender, Func<EventArgs> creator)
		{
			if (creator == null)
				throw new ArgumentNullException ("creator");

			if (self != null)
				self (sender, creator ());
		}

		public static void Raise<T>(this EventHandler<T> self, object sender, T args)
			where T : EventArgs
		{
			if (self != null)
				self (sender, args);
		}

		public static void Raise<T>(this EventHandler<T> self, object sender, Func<T> creator)
			where T : EventArgs
		{
			if (creator == null)
				throw new ArgumentNullException ("creator");

			if (self != null)
				self (sender, creator ());
		}
	}
}
